Multichamber filter press



March 5, 1940. E. w. MALKIN MULTICHAMBER FILTER PRESS Filed Nov. 15,1958 ill Patented Mar. 5, 1940 UNITED STATES PATENT orrics MULTICHALIBERFILTER PRESS Application November 15, 1938, Serial No. 240,475

2 Claims.

This invention relates to improvements in multichamber filter presses inwhich a series of filter trays are individually suspended from anoverhead girder runway by means of supporting rollers which cooperatewith auxiliary guide rollers mounted on vertical spindles so as to beengageable with guide rails, and in which these filter trays are pressedtogether between a pair of similarly suspended end plates connected bylongitudinal tie-rods; the primary object of the present improvementsbeing to afford facilities for the exclusion of water or foreign matterfrom the upright bearings of the guide rollers, a secondary object beingto facilitate the locking and unlocking of the tie-rods in relation tothe filter trays and end plates for the closing and opening movements ofthe press.

These objects are attained by mechanism illustrated in the accompanyingdrawing, in which:

Fig. l is a front elevation of one end of a hydraulically controlledmulti chamber filter press of the aforesaid kind having the presentimprovements applied.

Fig. 2 is an end elevation of the filter press, partly in section on aplane indicated by the line 2-2 in Fig. 1.

Fig. 3 is a fragmentary end elevation showing in sectional detail one ofthe auxiliary guide rollers and its vertical spindle mountingarrangements as improved in accordance with the invention.

Fig. 4 is a plan of the auxiliary guide roller and the retaining head ofits vertical spindle as illustrated in Fig. 3.

Similar numerals refer to throughout the several views.

The framework of the multichamber filter press comprises an openpedestal I at each end, and a horizontal girder 2 centrallyinterconnecting the tops of the pedestals I to constitute an overheadrunway. The series of filter trays 3 are pressed together between a pairof end plates 4 connected by longitudinal tie-rods 5, shown as three innumber, each end plate l being suspended from the overhead runway bymeans of opposite pairs of supporting rollers 6 rotatable on the runwayflanges of the girder 2 and supported by a pair of upstanding hangers l,and the insimilar parts dividual trays 3 being similarly suspended fromthe overhead runway by means of smaller supporting rollers 8 supportedby upstanding hangers 9.

The supporting rollers 8 of the individual filter trays 3 are arrangedin cooperation with auxiliary guide rollers it having ball-bearingmountings II on vertical spindles l2 fitted with sleeves l3 andupstanding from bracket arms I4 secured to the hangers 9, these guiderollers I!) being engageable with the inner faces of auxiliary guiderails l fixed longitudinally to opposite sides of 5 the overhead runwaygirder 2 at a suitable spacing therefrom.

The upper face of each auxiliary guide roller I0 is outwardly inclinedin a shallow conical form to facilitate drainage of water therefrom, and10 is further formed with an upstanding annular flange IE surroundingits central bore, the retaining head ll of the vertical spindle 12 beingformed with a dependent annular flange !8 which constitutes an enclosinghood for the flange [5 15 and thereby serves to ensure that both waterand solid matter are excluded from the upright bearings of the auxiliaryguide roller HI, this protective action being further ensured if desiredby the provision of radial drainage channels IS in the inclined upperface of the guide roller [0.

The filter press as illustrated is adapted for hydraulic control bymeans of rams 2i operatively associated with the respective tie-rods 5,the series of hydraulic rams 2E! being controlled in common from apressure-distributing unit 2!, and each tie-rod 5 being fitted at eachend with a lock-nut 22 adapted for tommy-bar control, therebyfacilitating both the locking of the tierods in relation to the filtertrays 3 and end plates 4 as the press is tightened up, and also theunlocking of the tie-rods 5 for the opening of the press, independent ofany manipulation of cotterpins or the like.

It may be explained that the type of filter press to which the inventionrelates is designed for use mainly in the preparation of potters clay,but is applicable also for analogous industrial purposes.

I claim:

1. In a multiple-chamber filter press of the overhead suspension type, afixed vertical spindle provided with a retaining head, an auxiliaryguide roller rotatably mounted on said spindle on antifriction bearings,an integral dependent and annular hooding flange formed on the peripheryof the head of the said spindle, an upstanding annular flange on theupper face of the said guide roller, the dependent flange freelyembracing the upstanding flange for the purpose of excluding moistureand solid matter from the said bearing.

2. In a multiple-chamber filter press of the overhead suspension type, afixed vertical spindle provided with a retaining head, an auxiliaryguide roller rotatably mounted on said spindle on antifriction bearings,an integral dependent and annular hooding flange formed on the peripheryof the head of the said spindle, an upstanding annular flange on theupper face of the said guide roller, the dependent flange freelyembracing the upstanding flange for the purpose of excluding moistureand solid matter from the said bearing, and channels formed in the upperinclined face of said guide roller to afiord drainage facilities.

EDWIN WILLIAM MALKIN.

